VA02 series of high voltage explosion-proof asynchronous motors

The VAO2 asynchronous, squirrel cage, explosion-proof electric motors have the same power and r.p.m. range, the same weather, water and dust proofing as the predecessor VAO series and are designed for the same explosion hazards. The nominal r.p.m. ranges from 750 to 3,000, the power ratings from 200 to 1,000 kW, voltage ratings are 6,000 and 10,000 volts with efficiencies running from 93.4 to 95.6% and weights of 1,620 to 5,700 kg. The new VAO2 motors incorporate the following improvements: the use of cold rolled electrical steel with lower specific losses; the use of a bottle configuration for the rotor slot instead of the usual oval; an improved exterior cooling system; and a reduction in the average insulation thickness.